Nutch2.1+mysql+solr3.6.1+中文网站抓取

1、mysql 数据库配置 linux mysql安装步骤省略。 创建数据库与表 [sql] view plaincopyprint? CREATE DATABASE nutch DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci; CREATE TABLE `webpage`( `id` varchar (767) CHARACTER SET latin1 NOT N

1、mysql 数据库配置

linux mysql安装步骤省略。

创建数据库与表

[sql] view plaincopyprint?

1. CREATE DATABASE nutch DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;
3. CREATE TABLE `webpage` (
5. `id` varchar(767) CHARACTER SET latin1 NOT NULL,
7. `headers` blob,
9. `text` mediumtext DEFAULT NULL,
11. `status` int(11) DEFAULT NULL,
13. `markers` blob,
15. `parseStatus` blob,
17. `modifiedTime` bigint(20) DEFAULT NULL,
19. `score` float DEFAULT NULL,
21. `typ` varchar(32) CHARACTER SET latin1 DEFAULT NULL,
23. `baseUrl` varchar(512) CHARACTER SET latin1 DEFAULT NULL,
25. `content` mediumblob,
27. `title` varchar(2048) DEFAULT NULL,
29. `reprUrl` varchar(512) CHARACTER SET latin1 DEFAULT NULL,
31. `fetchInterval` int(11) DEFAULT NULL,
33. `prevFetchTime` bigint(20) DEFAULT NULL,
35. `inlinks` mediumblob,
37. `prevSignature` blob,
39. `outlinks` mediumblob,
41. `fetchTime` bigint(20) DEFAULT NULL,
43. `retriesSinceFetch` int(11) DEFAULT NULL,
45. `protocolStatus` blob,
47. `signature` blob,
49. `metadata` blob,
51. PRIMARY KEY (`id`)
53. ) ENGINE=InnoDB DEFAULT CHARSET=utf8;




2、安装nutch2.1
A、 nutch下载地址：http://apache.etoak.com/nutch/2.1/apache-nutch-2.1-src.zip

下载完成后家压缩，

B、以下将nutch的根目录定位${APACHE_NUTCH_HOME}.

C、配置nutch对mysql的支持，修改${APACHE_NUTCH_HOME}/ivy/ivy.xml文件

将这行的注释取消default”/>

修改${APACHE_NUTCH_HOME}/conf/gora.properties文件，

注释默认存储配置

[html] view plaincopyprint?

1. ###############################
3. # Default SqlStore properties #
4. ###############################
5. #gora.sqlstore.jdbc.driver=org.hsqldb.jdbc.JDBCDriver
6. #gora.sqlstore.jdbc.url=jdbc:hsqldb:hsql://localhost/nutchtest
7. #gora.sqlstore.jdbc.user=sa
8. #gora.sqlstore.jdbc.password=
10. 取消以下代码注释，
12. ###############################
13. # MySQL properties
14. ################################
16. gora.sqlstore.jdbc.driver=com.mysql.jdbc.Driver
18. gora.sqlstore.jdbc.url=jdbc:mysql://localhost:3306/nutch?createDatabaseIfNotExist=true
20. gora.sqlstore.jdbc.user=xxxxx（mysql用户名）
22. gora.sqlstore.jdbc.password=xxxxx（mysql密码）

D、修改${APACHE_NUTCH_HOME}/conf/nutch-site.xml 加入如下代码：

[html] view plaincopyprint?

1. <property>
3. <name>http.agent.namename>
5. <value>Your Nutch Spidervalue>
7. property>
9. <property>
11. <name>http.accept.languagename>
13. <value>ja-jp, en-us,en-gb,en;q=0.7,*;q=0.3value>
15. <description>Value of the “Accept-Language” request header field.
17. This allows selecting non-English language as default one to retrieve.
19. It is a useful setting for search engines build for certain national group.
21. description>
23. property>
25. <property>
27. <name>parser.character.encoding.defaultname>
29. <value>utf-8value>
31. <description>The character encoding to fall back to when no other information
33. is availabledescription>
35. property>
37. <property>
39. <name>storage.data.store.classname>
41. <value>org.apache.gora.sql.store.SqlStorevalue>
43. <description>The Gora DataStore class for storing and retrieving data.
45. Currently the following stores are available: ….
47. description>
49. property>

E、使用ant编译 ${APACHE_NUTCH_HOME} 。

F、设置待抓取的网站

cd ${APACHE_NUTCH_HOME}/runtime/local
mkdir -p urls
echo 'http://nutch.apache.org/' > urls/seed.txt

G、执行爬行操作： bin/nutch crawl urls -depth 3 -topN 5

执行完在mysql中即可以查看到爬虫抓取的内容

3、安装solr，对nutch抓取的内容进行索引

（注意：参考资料中推荐使用solr4.0版本，4.0的两个版本我都试了，没有成功，所以替换为3.6.1版本）

solr下载地址：http://www.fayea.com/apache-mirror/lucene/solr/3.6.1/apache-solr-3.6.1.zip

A、解压缩下载包，

B、下载 http://nlp.solutions.asia/wp-content/uploads/2012/08/schema.xml替换${APACHE_SOLR_HOME}/example/solr/conf/schema.xml.

C、启动solr

cd ${APACHE_SOLR_HOME}/example

java -jar start.jar

D、在浏览器输入地址http://localhost:8983/solr 测试是否启动成功。

E、另起linux终端，输入如下命令，使solr对nutch抓取内容进行索引。

cd ${APACHE_NUTCH_HOME}/runtime/local/

bin/nutch solrindex http://127.0.0.1:8983/solr/ -reindex

4、测试

在浏览器输入 http://localhost:8983/solr ，看到如下界面：

在文本框中输入 content:nutch 点击查询，便可查处内容中包含nutch关键字的网页